Keep Only the Highest Set Bit

Code

#include <stdio.h>
#include <stdint.h>

// Complete the function
uint16_t highest_set_bit(uint16_t reg) {
    // Your logic here
    uint16_t pos = 0U;
    for(int i = 0; i < 16; i++)
    {
        if((reg >> i) & 1U)
        {
            if(i > pos)
            {
                pos = i;
            }
        }
    }
    reg &= (1U << pos);
    return reg;
}

int main() {
    uint16_t reg;
    scanf("%hu", &reg);

    uint16_t result = highest_set_bit(reg);
    printf("%hu", result);
    return 0;
}

Solving Approach